1  /*
       2   * Test strace's -x option.
       3   *
       4   * Copyright (c) 2020-2021 The strace developers.
       5   * All rights reserved.
       6   *
       7   * SPDX-License-Identifier: GPL-2.0-or-later
       8   */
       9  
      10  #include "tests.h"
      11  
      12  #include <stdio.h>
      13  #include <unistd.h>
      14  
      15  #ifndef STRACE_X
      16  # define STRACE_X 1
      17  #endif
      18  
      19  #if STRACE_X == 1
      20  # define XOUT(_, x_chars_, x_, xx_) x_
      21  #elif STRACE_X == 2
      22  # define XOUT(_, x_chars_, x_, xx_) xx_
      23  #elif STRACE_X == 3
      24  # define XOUT(_, x_chars_, x_, xx_) x_chars_
      25  #elif STRACE_X == 0
      26  # define XOUT(_, x_chars_, x_, xx_) _
      27  #endif
      28  
      29  int
      30  main(void)
      31  {
      32  	static const struct {
      33  		const char *path;
      34  		const char *out;
      35  	} test_vecs[] = {
      36  		{ "test",
      37  		  XOUT("test", "test", "test", "\\x74\\x65\\x73\\x74") },
      38  		{ "\t\n\v\f\r hi~", XOUT("\\t\\n\\v\\f\\r hi~",
      39  		  "\\t\\n\\v\\f\\r hi~", "\\t\\n\\v\\f\\r hi~",
      40  		  "\\x09\\x0a\\x0b\\x0c\\x0d\\x20\\x68\\x69\\x7e") },
      41  		{ "\t\n\v\f\r\16 hi~", XOUT("\\t\\n\\v\\f\\r\\16 hi~",
      42  		  "\\t\\n\\v\\f\\r\\x0e hi~",
      43  		  "\\x09\\x0a\\x0b\\x0c\\x0d\\x0e\\x20\\x68\\x69\\x7e",
      44  		  "\\x09\\x0a\\x0b\\x0c\\x0d\\x0e\\x20\\x68\\x69\\x7e") },
      45  		{ "\10\t\n\v\f\r hi~", XOUT("\\10\\t\\n\\v\\f\\r hi~",
      46  		  "\\x08\\t\\n\\v\\f\\r hi~",
      47  		  "\\x08\\x09\\x0a\\x0b\\x0c\\x0d\\x20\\x68\\x69\\x7e",
      48  		  "\\x08\\x09\\x0a\\x0b\\x0c\\x0d\\x20\\x68\\x69\\x7e") },
      49  		{ "\t\n\v\f\r\37 hi~", XOUT("\\t\\n\\v\\f\\r\\37 hi~",
      50  		  "\\t\\n\\v\\f\\r\\x1f hi~",
      51  		  "\\x09\\x0a\\x0b\\x0c\\x0d\\x1f\\x20\\x68\\x69\\x7e",
      52  		  "\\x09\\x0a\\x0b\\x0c\\x0d\\x1f\\x20\\x68\\x69\\x7e") },
      53  		{ "\t\n\v\f\r hi~\177", XOUT("\\t\\n\\v\\f\\r hi~\\177",
      54  		  "\\t\\n\\v\\f\\r hi~\\x7f",
      55  		  "\\x09\\x0a\\x0b\\x0c\\x0d\\x20\\x68\\x69\\x7e\\x7f",
      56  		  "\\x09\\x0a\\x0b\\x0c\\x0d\\x20\\x68\\x69\\x7e\\x7f") },
      57  		{ "\t\n\v\f\r hi~\222", XOUT("\\t\\n\\v\\f\\r hi~\\222",
      58  		  "\\t\\n\\v\\f\\r hi~\\x92",
      59  		  "\\x09\\x0a\\x0b\\x0c\\x0d\\x20\\x68\\x69\\x7e\\x92",
      60  		  "\\x09\\x0a\\x0b\\x0c\\x0d\\x20\\x68\\x69\\x7e\\x92") },
      61  		{ "\t\n\v\f\r hi~\377", XOUT("\\t\\n\\v\\f\\r hi~\\377",
      62  		  "\\t\\n\\v\\f\\r hi~\\xff",
      63  		  "\\x09\\x0a\\x0b\\x0c\\x0d\\x20\\x68\\x69\\x7e\\xff",
      64  		  "\\x09\\x0a\\x0b\\x0c\\x0d\\x20\\x68\\x69\\x7e\\xff") },
      65  	};
      66  	static char path[] = "  ";
      67  
      68  	const char *rc_str;
      69  
      70  	for (size_t i = 0; i < ARRAY_SIZE(test_vecs); i++) {
      71  		rc_str = sprintrc(chdir(test_vecs[i].path));
      72  		printf("chdir(\"%s\") = %s\n", test_vecs[i].out, rc_str);
      73  	}
      74  
      75  	for (unsigned char c = 1; c < 255; c++) {
      76  		path[1] = c;
      77  		rc_str = sprintrc(chdir(path));
      78  
      79  		printf("chdir(");
      80  #if STRACE_X == 2
      81  		print_quoted_hex(path, sizeof(path) - 1);
      82  #else
      83  # if STRACE_X != 0
      84  		if (((c < ' ') || (c >= 0x7f)) && (c != '\t') && (c != '\n') &&
      85  		    (c != '\v') && (c != '\f') && (c != '\r'))
      86  #  if STRACE_X == 3
      87  			printf("\"%c\\x%02hhx\"", path[0], path[1]);
      88  #  else
      89  			print_quoted_hex(path, sizeof(path) - 1);
      90  #  endif
      91  		else
      92  # endif
      93  			print_quoted_string(path);
      94  #endif
      95  		printf(") = %s\n", rc_str);
      96  	}
      97  
      98  	puts("+++ exited with 0 +++");
      99  	return 0;
     100  }